Dr. Darrell Long

Building Flexible, Fault-Tolerant Flash-based Storage Systems

Proceedings of Hot Topics in System Dependability (HotDep)

June 2009View full paper

Abstract

Adding flash memory to the storage hierarchy has recently gained a great deal of attention in both industry and academia. Decreasing cost, low power utilization and improved performance has sparked this interest. Flash reliability is a weakness that must be overcome in order for the storage industry to fully adopt flash for persistent storage in mission-critical systems such as high-end storage controllers and low-power storage systems. We consider the unique reliability properties of NAND flash and present a high-level architecture for a reliable NAND flash memory storage system. The architecture manages erasure-coded stripes to increase reliability and operational lifetime of a flash memory-based storage system, while providing excellent write performance. Our analysis details the tradeoffs such a system can make, enabling the construction of highly reliable flash-based storage systems.

BibTeX

@inproceedings{greenan-hotdep09,
  author       = {Kevin M. Greenan and Darrell D. E. Long and Ethan L. Miller and Thomas J. E. Schwarz and Avani Wildani},
  title        = {Building Flexible, Fault-Tolerant Flash-based Storage Systems},
  booktitle    = {Proceedings of Hot Topics in System Dependability (HotDep)},
  organization = {IEEE},
  address      = {Lisbon},
  month        = jun,
  year         = {2009}
}
View full paper